82C55A-2 Integrated Circuit - DIP40 - Intel

82C55A Integrated Circuit - DIP40 - Harris Semiconductor

MSM80C154RS Integrated Circuit - DIP40 - OKI Semiconductor

MSM81C55RS Integrated Circuit - DIP40 - OKI Semiconductor

81C55 Integrated Circuit - DIP40 - OKI Semiconductor

MSM82C55A5RS Integrated Circuit - DIP40 - OKI Semiconductor

MSM80C85AH-RS Integrated Circuit - DIP40 - OKI Semiconductor

MSM80C85AH-R3 Integrated Circuit - DIP40 - OKI Semiconductor